U 80x40x6 IAS · Weight & Dimensions

IAS, cold-formed sections · Cold-formed Channel

Cold-formed channels (U shapes) are similar to C shapes but without stiffening lips. Used for light structural framing, supports, and secondary members.

Also known as: U 80x40x6 (UK / Australia)

The U 80x40x6 steel profile weighs 6.6 kg/m (4.44 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 841.578 mm². Moment of inertia Ix = 74.297 cm⁴, Iy = 12.229 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	6 mm	0.24 in
Weight	6.6 kg/m	4.44 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	841.58 mm²	1.304 in²
Moment of inertia (Ix)	74.3 cm⁴	1.78 in⁴
Moment of inertia (Iy)	12.23 cm⁴	0.29 in⁴
Elastic section modulus (Sx)	18.57 cm³	1.133 in³
Elastic section modulus (Sy)	4.5 cm³	0.275 in³
Plastic section modulus (Zx)	24.64 cm³	1.504 in³
Plastic section modulus (Zy)	6.14 cm³	0.375 in³
Radius of gyration (rx)	2.97 cm	1.170 in
Radius of gyration (ry)	1.21 cm	0.475 in